package com.example.bookManagement.Controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RequestMapping("/test")
@RestController
public class TestController {
    @RequestMapping("/t1")
    public Integer t1() {
        String a = null;
        System.out.println(a.length());
        return 200;
    }
}
